Bayesian optimisation for ultrafast X-ray generation from dual-stage laser-plasma accelerators

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00384414" target="_blank" >RIV/68407700:21340/25:00384414 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1117/12.3056320" target="_blank" >https://doi.org/10.1117/12.3056320</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.3056320" target="_blank" >10.1117/12.3056320</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bayesian optimisation for ultrafast X-ray generation from dual-stage laser-plasma accelerators

Popis výsledku v původním jazyce

Laser wakefield acceleration (LWFA) has proven highly effective in producing high-energy electron beams, which then generate bright femtosecond X-ray pulses through betatron oscillations. A drawback of this method is its low conversion efficiency and relatively low photon flux. One promising approach to increase the brightness of X-ray radiation is the so called passive plasma lensing. In this method, electrons are injected and accelerated in the first gas jet – the accelerator – and the transverse oscillations of the electron beam are then amplified in the second jet with higher density – the radiator. It has been shown both theoretically and experimentally that in the radiator, the electron beam is focused, and the magnitude of the betatron radiation is increased. We demonstrate how Bayesian optimisation can be used to optimise the parameters of this multi-jet scheme using multidimensional particle-in-cell simulations.

Název v anglickém jazyce

Bayesian optimisation for ultrafast X-ray generation from dual-stage laser-plasma accelerators

Popis výsledku anglicky

Laser wakefield acceleration (LWFA) has proven highly effective in producing high-energy electron beams, which then generate bright femtosecond X-ray pulses through betatron oscillations. A drawback of this method is its low conversion efficiency and relatively low photon flux. One promising approach to increase the brightness of X-ray radiation is the so called passive plasma lensing. In this method, electrons are injected and accelerated in the first gas jet – the accelerator – and the transverse oscillations of the electron beam are then amplified in the second jet with higher density – the radiator. It has been shown both theoretically and experimentally that in the radiator, the electron beam is focused, and the magnitude of the betatron radiation is increased. We demonstrate how Bayesian optimisation can be used to optimise the parameters of this multi-jet scheme using multidimensional particle-in-cell simulations.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proc. SPIE 13537, Compact Radiation Sources from EUV to Gamma-rays: Development and Applications II

ISBN

978-1-5106-8870-4

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

5

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellingham (stát Washington)

Místo konání akce

Praha

Datum konání akce

7. 4. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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